High Temperature Viscometer, hts-VROC

Viscometer Specifications 

Minimum Sample Volume 25 μL
Viscosity Range 0.2 - 100,000 mPas
Shear Rate Range 0.5-1.4M s-1
Temperature Range 4 - 105 °C
Temperature Stability ~+/- 0.07 °C
Accuracy ~+/- 2% Reading
Repeatability ~+/- 0.5% Reading
Shear Sweeps Yes
Temperature Sweeps Yes
Typical Test Time <1 min
Consult a Product Specialist

hts-VROC™ VISCOMETER— High Temperature, High shear Viscosity

Understanding Fluid Behavior in High Temperatures

Because viscosity is heavily dependent on temperature, RheoSense includes a precise temperature controller with all VROC® units to provide thermal stability to within +/-0.07 °C. The standard VROC® components and temperature control system allow for operation from 4°C to 70°C, but with specific applications, such as those following a pre-existing ISO or ASTM method, the viscosity measurement is required to be performed at a specific elevated temperature. For example, in the case of lubricants, a specific shear rate is required to mimic the conditions within the journal bearings of internal combustion engines under operating conditions.

To meet this requirement, RheoSense introduced the hts-VROC™ model. This system provides the same features and specifications as m-VROC™, but hts-VROC™ provides the added capability to measure at temperatures as high as 105 °C.

Testing a Sample with 
hts-VROC™ Viscometer

High Temperature Viscometer, hts-VROC

Step 1: Load the syringe with your sample
High Temperature Viscometer

Step 2: Tighten the syringe into the chip enclosure and secure it inside the thermal jacket
High Temperature Viscometer Step 3: Bring down the top of the thermal jacket enclosure and lock it by turning the black thumb screw clockwise— you are ready to measure your sample!

Key Applications

• Formulating new lubricants
• Developing new inkjet inks,cosmetics, or food additives
• Understanding temperature effects on drug stability
• Refining new polymers for use in paints, performance coatings, or EOR fluids
• Researching viscous behaviorsin general chemistry applications